54 lines
2.4 KiB
C
54 lines
2.4 KiB
C
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Mupen64plus-rsp-hle - cicx105.c *
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* Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ *
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* Copyright (C) 2012 Bobby Smiles *
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* Copyright (C) 2009 Richard Goedeken *
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* Copyright (C) 2002 Hacktarux *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include <string.h>
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#include "hle_internal.h"
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/**
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* During IPL3 stage of CIC x105 games, the RSP performs some checks and transactions
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* necessary for booting the game.
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*
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* We only implement the needed DMA transactions for booting.
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*
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* Found in Banjo-Tooie, Zelda, Perfect Dark, ...)
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**/
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void cicx105_ucode(struct hle_t* hle)
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{
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/* memcpy is okay to use because access constrains are met (alignment, size) */
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unsigned int i;
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unsigned char *dst = hle->dram + 0x2fb1f0;
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unsigned char *src = hle->imem + 0x120;
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/* dma_read(0x1120, 0x1e8, 0x1e8) */
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memcpy(hle->imem + 0x120, hle->dram + 0x1e8, 0x1f0);
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/* dma_write(0x1120, 0x2fb1f0, 0xfe817000) */
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for (i = 0; i < 24; ++i) {
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memcpy(dst, src, 8);
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dst += 0xff0;
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src += 0x8;
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}
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}
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